35kV indoor epoxy resin cast current transformer for power grid metering. Dual windings for 0.2S high-precision metering and protection. Rated output 10-15VA, wide primary current range. Compliant with IEC 61869 and GB/T 20840 standards. Ultra-low partial discharge ensures long-term metering accuracy. Vacuum epoxy casting, compact pillar design, excellent insulation performance. Suitable for 35kV grid metering applications, customizable ratio.
Indoor 35kV epoxy cast current transformer with 0.2S metering accuracy, dual windings, and IEC compliance. Suitable for grid metering applications.
| Parameter | Specification | Verification |
|---|---|---|
| Product Type | Current Transformer | IEC 61869, GB/T 20840 |
| Model Code | LJZN1-35 | Factory nameplate marking |
| Primary Voltage | 35kV | Rated voltage test (IEC 61869-1/3) |
| Secondary Voltage | 5A or 1A | Ratio check at rated frequency |
| Accuracy Class | 0.2S metering class | Accuracy test (IEC 61869-2 / IEEE C57.13) |
| Rated Burden | 10-15VA | Burden test at rated VA |
| Insulation Type | Dry Epoxy Resin | Dielectric tests per standard |
| Insulation Level (BIL) | [On Request] | Power-frequency & lightning impulse withstand |
| Standards | IEC 61869, GB/T 20840 | Certified to listed standards |
| Frequency | 50/60Hz | Per IEC 61869-1 |
| Environment | Indoor pillar-type epoxy resin cast | Per datasheet limits |
Ideal For
Not Recommended For
For current transformer: secondary terminals 1S1/1S2 for metering winding, 2S1/2S2 for protection winding. Never open-circuit the secondary of a CT while energized - hazardous voltage. Ground the secondary winding at one point. Follow IEC 61869 terminal conventions.
Compliant with: IEC 61869, GB/T 20840
S_total = ΣS_instrument + I₂² × (ρ × 2L / A)
Q: What is the accuracy class of this CT?
A: 0.2S metering class.
Q: What is the rated burden?
A: 10-15VA.
Q: Is it suitable for outdoor use?
A: No, it is designed for indoor use only.
Missing fields are marked [On Request] — never fabricated. M2/M5/M6 verification rows follow IEC 61869 / IEEE C57.13 conventions.
| Voltage class (kV) | Rated primary current (A) | Accuracy classCombined | Rated output (VA) | Rated dynamic current (kA) | Short-time thermal current (kA) | Rated output (VA) | Rated dynamic current (kA) | Short-time thermal current (kA) |
|---|---|---|---|---|---|---|---|---|
| 10, 20 | 20 | 0.2S | 10 | 5 | 2 | 5 | 2 | 12.5 |
| 10, 20 | 30 | 0.2S | 10 | 5 | 2 | 5 | 2 | 20 |
| 10, 20 | 40 | 0.2S | 10 | 5 | 2 | 5 | 2 | 20 |
| 10, 20 | 50 | 0.2S | 10 | 5 | 2 | 5 | 2 | 40 |
| 10, 20 | 75 | 0.2S | 10 | 5 | 2 | 5 | 2 | 40 |
| 10, 20 | 100-200 | 0.2S | 10 | 5 | 2 | 20 | 2 | 65 |
| 10, 20 | 300-500 | 0.2S | 10 | 5 | 2 | 25 | 4 | 63 |
| 10, 20 | 600-750 | 0.2S | 10 | 5 | 2 | 31.5 | 4 | 100 |
| 10, 20 | 1000-2000 | 0.2S | 10 | 5 | 2 | 40 | 4 | 100 |
| 10, 20 | 50 | 0.2S | 15 | 5 | 2 | 40 | 4 | 100 |
| 35 | 100 | 0.2S | 15 | 5 | 2 | 8 | 2 | 0 |
| 35 | 150 | 0.2S | 15 | 5 | 2 | 16 | 2 | 40 |
| 35 | 200-300 | 0.2S | 15 | 5 | 2 | 25 | 4 | 63 |
| 35 | 400-600 | 0.2S | 15 | 5 | 2 | 31.5 | 4 | 80 |
Dimension & outline drawing of LJZN1-35 — click image to zoom / view original.
